aLi[i].onmouseover=function(){
var This=this;var liss=this.firstChild;var lis=this.childNodes;clearInterval(This.time);
This.time=setInterval(function(){
if(liss.innerHTML=="一级菜单"){
lis[2].style.height=lis[2].offsetHeight+30+"px";
if(lis[2].offsetHeight>=120){
clearInterval(This.time);
}
}
},30);
var This=this;var liss=this.firstChild;var lis=this.childNodes;clearInterval(This.time);
This.time=setInterval(function(){
if(liss.innerHTML=="一级菜单"){
lis[2].style.height=lis[2].offsetHeight+30+"px";
if(lis[2].offsetHeight>=120){
clearInterval(This.time);
}
}
},30);